Guard for meat mixers and the like



I March 12, 1929. A. c. VAN HOOYDONK GUARD FOR MEAT MIXERS AND THE LIKE Filed Jar 1. 12, 1928 2 Sheets-Sheet 1 March 12, 1929. A. c. VAN HOOYDONK 1,705,429

GUARD FOR MEAT MIXERS AND THE LIKE Filed Jan. 12, 1928 2 Shoots-Sheet Patented Mar. 12, 1929.

U N ITE 4 r 1,705,429 g? qFfiC ADRIAN G. VAN HOOYDONK, 0F BUFFALO, NEW YORK," ASSIGNOR TO JOHN E. SMITHS SONS COMPANY, OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

GUARD For. MEAT MIXERS AND THE LIKE.

Application filedJanuary 12 1928. Serial No, 246,155.

This invention relates more particularly to improvements in meat mixers of the type having a tiltable tub or bowl for facilitating the dumping of its contents.

Its principal object is the provision of an automatically-operated safety guard for preventing injury to the attendants of such machines wliile dumping their contents.

A further object of the invention is to provide simple, inexpensive and positive means for effecting the movement of the safety guard to its active and inactive positions when the mixingtub is tilted to its dumping and filling positions, respectively.

In the accompanying drawings:

Figure 1 is an end view of a meat mixing machine equipped with-my improved safety guard, the latter being shown in its open or inactive position. Figure 2 is a similar view showing the guard in its closed or active position. Figure 3 is a front elevation thereof with the parts in the positionshown in Fig. 2. F iguret is an enlarged cross section on line 4ll, Fig. 1.

Similar characters of reference indicate corresponding parts throughout the several views. 1 v

By way of example, the invention, while applicable to mixing machines of various types, is shown in connection with a well known type of meat mixer consisting of a tiltable tub or bowl 10 having horizontal trunnions 11 at its ends which. are journaled in the frame 12. The tub is adapted to be manually tilted to the position shown in Figs. 1 and 2, by means of a hand wheel 18 Whose shaft 14 carries a worm 15 meshing with a Worm wheel segment 16 fixed on one of the tub-trunnions.

Arranged side by side in the tub are parallel shafts 17 carrying spirally-disposed mixing paddles 18 which are driven by the customary gearing indicated generally by the numeral 19. V

My improved safety guard has been designed to partially cover the open top of the tub 10 in its tilted, dischargingposition and thereby prevent the attendant from placing his hands into or between the opposing edges of the paddles while discharging the tubcontents, but allow him to reach in at the bottom to thoroughly clean out the contents with safety by reason of the fact that the lowest paddles are directed away from the hands and possibility of injury is obviated.

To this end, the guard consists of a frame or cover 20 preferably in the form of a comparatively heavy screen or meshed panel hinged at 21 to brackets 22 secured to the upper rear side of the tub and normally held in an open, substantially upright position by counterweights 23 applied to extensions 24 of the cover at a point rearwardly of its hinge and adjustably held thereon bybolts 25'or other fastenings. Stops 26 secured to these counterweights and arranged to engage the rear side of the tub, as shown in Fig. 1, prevent the guard frame from swinging rearwardly beyond a desired predetermined position. These counterweights are so set as to correctly balance the guard frame about its hinge-axis when the tub is in its upright of the hinge20. ,As shown in Fig. e, this track is made of a single strip of'angle iron bent into the shape illustrated, the adjoining ends of the track being fastened by a tie plate 30. This ball is comparatively light in weight and the disposition of its guide track is such as to eflect a slow and gentle movement of the guard frame to its final open and closed positions in response to the corresponding tilting movements of the tub.

This improved guardfram while manifestly simple and inexpensive in construction and reliable in operation, effectually protects the attendants from injury while-engaged in emptying the contentsof the tub. Furthermore, the construction of the guard frame is such as to insure a gentle movement to its open and closed position Without slamming,

and it can be readily applied to existing macomprising a tiltable tub open at its top, a

guard hinged to said tub andextending over the same in its closed posltlon, a counterbalchines without in any way altering their conancing weight applied to said guard, and automatic means for controlling the movements of the guard to its open or closed position when the tub is tilted to a corresponding filling or discharging position.

2. A. machine of the character described, comprising a tiltable tub open at its top, a guard hinged to said tub, a c'ounterbalancing weight applied to said guard, and gravitycontrolled means carried by the guard for moving the same to a final open or closed positionwh-en the tub is tilted to a corresponding filling or discharging position.

3. A machine of the character described, comprising a tiltable tub open at its top for filling and discharging purposes, a guard frame hinged to said tub to extend partially over its open top in the tilted, discharge position thereof, and means for automatically controlling the movements of the guard frame to its open and closed positions when the tub is tilted to a corresponding filling or discharging position.

4. A machine of the character described, comprising a tiltable tub open at its top for filling and discharging purposes, a guard frame hinged to said tub to extend partially over its open'top in the tilted, discharge position thereof, a weight applied to said guard frame for maintaining it in a balanced position relative to the tub, and gravity-controlled means carried by the guard frame for moving the same to a final open or closed position when the tub is tilted to a corresponding filling or discharging position.

5. A machlne of the character described, comprising a tiltable tub open at its top for fillin and discharging purposes, a guard frame hinged to said tub to extend partially over its open top in the tilted, discharge posit-ion thereof, a counterbalancing weight for hinge-axis, and a weight movable on said guide track for automatically movingv the guard frame to its open and closed positions when the tub is tilted to a corresponding filling or discharging position.

6. A machine of the character described, comprising a tilt-able tub open at its top for filling and discharging purposes, a guard frame hinged to said tub to extend partially over its open top in the tilted, discharge position thereof, a counterbalancing Weight for the guard frame, a loop-shaped guide applied to the upper side of the guard frame and extending laterally on each side of its hinge-axis, and a ball contained Within said guide for automatically movingthe guard frame to its open and closed positions when the tub is tilted to a corresponding filling or discharging position.

7. A mixing machine of the character described, comprising a tiltable tub open at its top for filling and discharging purposes, a guard frame hinged to the upper rear edge of the tub to'form a closure therefor in its tilted, discharge position, said frame terminating short of the front edge of the tub to provide an opening through which thetubcontents are emptied, a counter-balancing weight adjustably mounted on the guard frame in rear of its hinge, a loop-shaped guide applied to the. top side of said guard frame and extending laterally on each side of its hinge-axis, and a ball contained within said guide for automatically moving the guard frame to its final open and closed positions when the tub is tilted to a corresponding filling or'discharging position.

ADRIAN c. VAN nooYnoNK. 

